同样，在外太空中，当您绕地球运行时，人们总是在这些空间站中四处漂浮。
Likewise, when in outer space, when you are orbiting the Earth, people are always floating around in these space stations.
有史以来最为复杂的工程项目创造了一组巨大的相互连接的模块，其以每小时27000公里的速度绕地球运行。
The most complex engineering project ever attempted has created an enormous set of interlinked modules that orbits the planet at more than 27,000 kilometres per hour.
这些卫星绕地球飞行。
我们的地理老师告诉我们月亮每28天绕地球一周。
Our geography teacher told us the moon circles the earth every 28 days.
这长度相当于绕地球三周的距离。
That's almost the equivalent of driving around the earth three times.
地球绕行太阳的速度大约是月球绕地球的30倍。
The speed of the Earth around the Sun is about 30 times the speed of the Moon around the Earth.
现在，月球的自转速度与绕地球公转速度是一样的。
Right now, the Moon's rotation rate, and the time it takes to orbit Earth are the same.
在完成媒体所谓的太空之“吻”后，两个飞行器现在一起绕地球转动。
After completing what state media referred to as a 'kiss' in space, both craft are now orbiting Earth together.
哈勃望远镜在绕地球轨道服役超过20年后继续获得极有价值的发现。
The Hubble Space Telescope continues to make valuable discoveries after more than twenty years in orbit around Earth.
“基本上，我们测量恒星周围的行星和月球绕地球的轨道，”基平说。
"Basically, we measure the orbits of the planet around the star and the moon around the planet," Kipping said.
这样做的目的是为了在地球自转的同时，使卫星能够绕地球同速转动。
The idea is that the craft circles ourplanet at the same speed as Earth’s rotation about its axis.
由于偏心率小，我们假定地球绕太阳的轨道和月球绕地球的轨道都是圆形。
Since the eccentricities are small, we can assume that the orbits of the Earth around the Sun and the Moon around the Earth are both circles.
人体里的血管总长度大约有62 000英里，拉直放到地上可以绕地球2.5圈。
There are 62, 000 miles of blood vessels in the human body – laid end to end they would circle the earth 2.5 times
这种情况每年平均发生一两次，不是每月都发生，因为月球绕地球公转的轨道稍稍有点斜。
This happens about once or twice a year, on the average, but not each month since the Moon's orbit around the Earth is slightly tilted.
(地球绕太阳公转一周约365天)，对比起来，月球约用29天左右绕地球一周。
(It takes about 365 days for the earth to make a complete revolution around the sun.) In contrast, the moon takes 29 days or so to make a complete cycle around the earth.
查德威克：实际上，那些最细小的尘土颗粒会被高高地吹到大气层当中，从而绕地球长途跋涉。
Chadwick: The finest portion will actually... can be lofted high enough into the atmosphere so that it will start to move long distances around the planet.
许多人相信太阳绕地球旋转，即古希腊学者Ptolemy于公元150年建立的地心说。
Many believed the sun revolved around the Earth, with ancient Greek scholar Ptolemy formalizing this "geocentric" model in 150.
很可能你看到的是一艘低轨宇宙飞船反射的太阳光，因为这些航天器每90分钟左右绕地球一圈。
What you are seeing, most likely, is a spacecraft in low Earth orbit reflecting back sunlight as it circles the Earth once every 90 minutes or so.
电视报道说“拉萨德”卫星，由伊朗航空航天局研发，重15.3公斤，每天在160公里的高空绕地球15次
The TV report said the Rasad satellite, developed by Iran's aerospace agency, weighs 15.3kg and has been designed to orbit the Earth 15 times a day at a height of 160 miles.
IBEX记录到的原子绕地球旋转，根据其自身能量不同，需要1到2年才能从日球层的边缘到达探测器的位置。
The atoms recorded by IBEX, which orbits Earth, took a year or two, depending on their energies, to reach the craft from the outer edge of the heliosphere.
两枚将探测太空天气情况的欧洲卫星终于进入绕地球运行轨道，4年前第一次发射时因运载火箭爆炸而失败。
Two European satellites that will study the weather in space are finally orbiting the Earth four years after a first launch attempt ended in disaster when a carrier rocket blew up.
只到1962年2月20号另一位美国宇航员JohnGlenn试图效仿Gagarin绕地球飞行的壮举。
It wasn't until John Glenn's flight on Feb. 20, 1962, that an American managed to emulate Gagarin's globe-circling feat.
绕地球轨道运行的时候，宇航员经常会采集一些图片，有些是日照亮斑，有些是太阳光洒落水面发生镜面反射的效果。
Astronauts orbiting the Earth frequently collect images that include sunglint, or the mirror-like reflection of sunlight off a water surface.
以时速17500英里/小时（5英里/秒）飞行，每90分钟我们就绕地球飞行一圈，就是说每45分钟就日升或日落一次。
Traveling at 17, 500 miles per hour (5 miles per second)…we orbit the Earth every 90 minutes, with a sunrise or sunset every 45 minutes.
自2009年12月14日发射升空以来，广角红外线探测望远镜开始环绕绕地球极地轨道并每11秒抓拍一张照片。
Since its launch Dec. 14, 2009, the Wide-Field Infrared Survey Explorer has been circling the Earth in a polar orbit and snapping images every 11 seconds.
近地半球总是面对地球，远地半球总是远离地球，因为月球在绕地球旋转的同时，它也在以同样的速率绕自己的轴自转。
The near side is always facing Earth and the far side is always facing away, because the moon revolves around the Earth at the same rate that it rotates on its own axis.
近地半球总是面对地球，远地半球总是远离地球，因为月球在绕地球旋转的同时，它也在以同样的速率绕自己的轴自转。
The near side is always facing Earth and the far side is always facing away, because the moon revolves around the Earth at the same rate that it rotates on its own axis.
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